Yeah, but actually the pilots are still using their noise canceling headsets under 10,000 feet, so this whole "untested" electronic equipment line doesn't make much sense.

I have a pair of Bose NCH's for when I'm a passenger on commercial flights, and a pair of cheaper NCH headsets with a microphone I use in Cessnas. My instructor actually insisted I keep it on the whole flight. I've definitely never had them interfere with the instruments.